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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Associate	Hanna Moos	Italy	1 2 3 4 5
2	Accounting Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
3	Accounting Manager	Jaime Yorres	Italy	1 2 3 4 5
4	Marketing Manager	Pascale Cartrain	USA	1 2 3 4 5
5	Sales Associate	Howard Snyder	Bulgaria	1 2 3 4 5
6	Sales Consultant	Antonio Moreno	Brazil	1 2 3 4 5
7	Accounting Manager	Georg Pipps	Germany	1 2 3 4 5
8	Sales Agent	Matti Karttunen	Bulgaria	1 2 3 4 5
9	Accountant	Patricio Simpson	Brazil	1 2 3 4 5
10	Sales Manager	Howard Snyder	Germany	1 2 3 4 5
11	Sales Agent	Georg Pipps	France	1 2 3 4 5
12	Sales Agent	Georg Pipps	Germany	1 2 3 4 5
13	Sales Agent	Georg Pipps	France	1 2 3 4 5
14	Sales Agent	Elizabeth Lincoln	Spain	1 2 3 4 5
15	Sales Agent	Pascale Cartrain	Spain	1 2 3 4 5
16	Sales Representative	Elizabeth Lincoln	England	1 2 3 4 5
17	Accounting Manager	Georg Pipps	England	1 2 3 4 5
18	Sales Associate	Hanna Moos	USA	1 2 3 4 5
19	Accountant	Antonio Moreno	England	1 2 3 4 5
20	Accountant	Patricio Simpson	England	1 2 3 4 5
21	Marketing Manager	Elizabeth Lincoln	USA	1 2 3 4 5
22	Marketing Assistant	Antonio Moreno	Austria	1 2 3 4 5
23	Sales Associate	Howard Snyder	Italy	1 2 3 4 5
24	Marketing Assistant	Paul Henriot	Brazil	1 2 3 4 5
25	Sales Consultant	Jaime Yorres	Bulgaria	1 2 3 4 5
26	Marketing Manager	Patricio Simpson	Brazil	1 2 3 4 5
27	Sales Manager	Patricio Simpson	England	1 2 3 4 5
28	Sales Consultant	Antonio Moreno	Austria	1 2 3 4 5
29	Sales Associate	Howard Snyder	Bulgaria	1 2 3 4 5
30	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
31	Accounting Manager	Jaime Yorres	Italy	1 2 3 4 5
32	Owner	Antonio Moreno	USA	1 2 3 4 5
33	Sales Associate	Elizabeth Lincoln	Brazil	1 2 3 4 5
34	Sales Associate	Paul Henriot	Argentina	1 2 3 4 5
35	Accountant	Paul Henriot	Argentina	1 2 3 4 5
36	Owner	Matti Karttunen	Germany	1 2 3 4 5
37	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
38	Sales Representative	Pascale Cartrain	France	1 2 3 4 5
39	Sales Representative	Howard Snyder	USA	1 2 3 4 5
40	Sales Agent	Howard Snyder	Argentina	1 2 3 4 5
41	Accounting Manager	Matti Karttunen	Germany	1 2 3 4 5
42	Sales Representative	Antonio Moreno	Bulgaria	1 2 3 4 5
43	Accounting Manager	Paul Henriot	Brazil	1 2 3 4 5
44	Marketing Assistant	Antonio Moreno	Italy	1 2 3 4 5
45	Owner	Jaime Yorres	Bulgaria	1 2 3 4 5
46	Sales Consultant	Antonio Moreno	Italy	1 2 3 4 5
47	Owner	Elizabeth Lincoln	Brazil	1 2 3 4 5
48	Owner	Matti Karttunen	England	1 2 3 4 5
49	Marketing Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
50	Sales Consultant	Elizabeth Lincoln	France	1 2 3 4 5
51	Sales Associate	Antonio Moreno	Spain	1 2 3 4 5
52	Sales Representative	Georg Pipps	England	1 2 3 4 5
53	Accountant	Patricio Simpson	Argentina	1 2 3 4 5
54	Owner	Elizabeth Lincoln	Germany	1 2 3 4 5
55	Accounting Manager	Hanna Moos	Italy	1 2 3 4 5
56	Sales Representative	Antonio Moreno	Spain	1 2 3 4 5
57	Accounting Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
58	Owner	Howard Snyder	USA	1 2 3 4 5
59	Marketing Assistant	Jaime Yorres	Germany	1 2 3 4 5
60	Owner	Patricio Simpson	France	1 2 3 4 5
61	Owner	Antonio Moreno	Austria	1 2 3 4 5
62	Marketing Assistant	Paul Henriot	Argentina	1 2 3 4 5
63	Sales Associate	Paul Henriot	Argentina	1 2 3 4 5
64	Accountant	Matti Karttunen	Austria	1 2 3 4 5
65	Sales Agent	Patricio Simpson	Bulgaria	1 2 3 4 5
66	Accountant	Howard Snyder	Bulgaria	1 2 3 4 5
67	Marketing Manager	Jaime Yorres	Austria	1 2 3 4 5
68	Sales Associate	Patricio Simpson	Brazil	1 2 3 4 5
69	Accounting Manager	Georg Pipps	Bulgaria	1 2 3 4 5
70	Accounting Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
71	Sales Agent	Pascale Cartrain	Germany	1 2 3 4 5
72	Sales Agent	Jaime Yorres	Germany	1 2 3 4 5
73	Sales Agent	Patricio Simpson	Argentina	1 2 3 4 5
74	Marketing Manager	Howard Snyder	England	1 2 3 4 5
75	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
76	Accountant	Elizabeth Lincoln	Italy	1 2 3 4 5
77	Sales Associate	Pascale Cartrain	France	1 2 3 4 5
78	Owner	Elizabeth Lincoln	Brazil	1 2 3 4 5
79	Sales Associate	Patricio Simpson	England	1 2 3 4 5
80	Marketing Assistant	Hanna Moos	Bulgaria	1 2 3 4 5
81	Sales Consultant	Georg Pipps	England	1 2 3 4 5
82	Sales Associate	Hanna Moos	USA	1 2 3 4 5
83	Marketing Manager	Paul Henriot	Austria	1 2 3 4 5
84	Sales Associate	Matti Karttunen	Austria	1 2 3 4 5
85	Sales Associate	Pascale Cartrain	USA	1 2 3 4 5
86	Sales Agent	Pascale Cartrain	Germany	1 2 3 4 5
87	Marketing Manager	Jaime Yorres	Germany	1 2 3 4 5
88	Sales Agent	Paul Henriot	Brazil	1 2 3 4 5
89	Sales Agent	Pascale Cartrain	Bulgaria	1 2 3 4 5
90	Sales Consultant	Hanna Moos	USA	1 2 3 4 5
91	Sales Agent	Patricio Simpson	Spain	1 2 3 4 5
92	Sales Associate	Matti Karttunen	Germany	1 2 3 4 5
93	Sales Consultant	Georg Pipps	USA	1 2 3 4 5
94	Owner	Hanna Moos	Brazil	1 2 3 4 5
95	Owner	Georg Pipps	Brazil	1 2 3 4 5
96	Marketing Manager	Pascale Cartrain	Germany	1 2 3 4 5
97	Sales Associate	Georg Pipps	France	1 2 3 4 5
98	Sales Manager	Matti Karttunen	Austria	1 2 3 4 5
99	Sales Associate	Elizabeth Lincoln	Spain	1 2 3 4 5
100	Sales Consultant	Hanna Moos	Germany	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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